Compressor provided with a motor

Abstract

A compressor provided with a motor includes several core block assemblies aligned in the circumferential direction of a bobbin and the several core block assemblies have a V-shaped bending shape.

The invention claimed is: 
     
       1. A compressor comprising:
 a cylindrical bobbin; 
 a coil disposed on an outer circumferential surface of the bobbin; 
 a magnet frame at least partially surrounded by the coil and configured to mount a magnet; 
 an inner core at least partially surrounded by the magnet frame; and 
 an outer core comprising a plurality of core block assemblies, at least a portion of the outer core being arranged at least partially around the bobbin, 
 wherein each of the plurality of core block assemblies comprises a first core block and a second core block circumferentially arranged relative to the first core block and coupled to the first core block at a coupling surface between the first core block and the second core block, and 
 wherein each of the plurality of core block assemblies includes an inner surface facing a central axis of the bobbin and an outer surface radially opposite to the inner surface, at least one of the inner surface or the outer surface including a first surface linearly extending in a first circumferential direction at a first angle relative to the coupling surface, and a second surface linearly extending in a second circumferential direction at a second angle relative to the coupling surface, the second circumferential direction being opposite to the first circumferential direction. 
 
     
     
       2. The compressor of  claim 1 , wherein the first core block and the second core block are circumferentially coupled at the coupling surface. 
     
     
       3. The compressor of  claim 2 , wherein each of the core block assemblies further comprises:
 a third core block axially coupled to the first core block; and 
 a fourth core block axially coupled to the second core block. 
 
     
     
       4. The compressor of  claim 3 , wherein each of the core block assemblies includes:
 a first coupling surface defining a first boundary of the first and second core blocks, the first coupling surface being the coupling surface; 
 a second coupling surface defining a second boundary of the first and third core blocks; 
 a third coupling surface defining a third boundary of the third and fourth core blocks; and 
 a fourth coupling surface defining a fourth boundary of the second and four core blocks. 
 
     
     
       5. The compressor of  claim 4 , wherein the first coupling surface is axially aligned with the third coupling surface, and the second coupling surface is circumferentially aligned with the fourth coupling surface. 
     
     
       6. The compressor of  claim 4 , wherein the first and third coupling surfaces extend across the second and fourth coupling surfaces. 
     
     
       7. The compressor of  claim 4 , wherein the inner surface of each of the plurality of core block assemblies is configured to be disposed inside the bobbin, and the outer surface of each of the plurality of core block assemblies is configured to be disposed outside the bobbin, and
 wherein at least one of the inner surface or the outer surface is configured to be in a V-shape. 
 
     
     
       8. The compressor of  claim 7 , wherein a third angle between the inner surface and a first reference line ranges from greater than 0° to less than 90°, wherein the first reference line extends perpendicular to the first coupling surface or the third coupling surface and through a first reference point that lies on the first coupling surface or the third coupling surface,
 wherein the third angle includes at least one of the first angle or the second angle. 
 
     
     
       9. The compressor of  claim 7 , wherein a fourth angle between the outer surface and a second reference line ranges from greater than 0° to less than 90°, wherein the second reference line extends perpendicular to the first coupling surface or the third coupling surface and through a second reference point that lies on the first coupling surface or the third coupling surface,
 wherein the fourth angle includes at least one of the first angle or the second angle. 
 
     
     
       10. The compressor of  claim 7 , wherein the inner surface of each of the plurality of core block assemblies is configured to be spaced apart from the magnet frame with varying distances in a circumferential direction. 
     
     
       11. The compressor of  claim 10 , wherein a first point of the inner surface and a second point of the magnet frame are defined such that a third reference line connecting the first point and the second point passes through the magnet and extends perpendicular to the magnet frame, wherein a first distance between the first point and the second point is a shortest distance between the inner surface and the magnet frame. 
     
     
       12. The compressor of  claim 10 , wherein a third point of the inner surface and a fourth point of the magnet frame are defined such that a fourth reference line connecting the third point and the fourth point passes through a space between adjacent magnets and extends perpendicular to the magnet frame, wherein a second distance between the third point and the fourth point is a longest distance between the inner surface and the magnet frame. 
     
     
       13. The compressor of  claim 1 , wherein the first core block and the second core block comprise a plurality of sheets circumferentially stacked. 
     
     
       14. The compressor of  claim 13 , wherein each of the plurality of sheets comprises:
 a first sheet portion providing the outer surface; 
 a second sheet portion connected to the first sheet portion; and 
 a third sheet portion connected to the second sheet portion and providing the inner surface. 
 
     
     
       15. The compressor of  claim 14 , wherein at least one of the first, second, or third sheet portions comprises:
 a coupling groove recessed from a first surface of the sheet; and 
 a coupling portion protruding from a second surface of the sheet opposite to the first surface of the sheet. 
 
     
     
       16. The compressor of  claim 15 , wherein the coupling groove and the coupling portion are offset by a predetermined gap along a circumferential direction,
 wherein the coupling portion of a sheet is configured to be engaged with the coupling recess of an adjacent sheet such that, when stacked, the plurality of sheets is arranged at an angle along the circumferential direction, and 
 wherein at least one of the first core block or the second core block includes the plurality of sheets being stacked. 
 
     
     
       17. The compressor of  claim 15 , wherein the first core block is configured symmetrically to the second core block with the coupling surface therebetween. 
     
     
       18. The compressor of  claim 17 , wherein the coupling groove of the first core block is configured to face the coupling groove of the second core block, and
 wherein each of the plurality of core block assemblies includes a groove portion recessed at a center portion of the coupling surface, the groove portion including the coupling groove of the first core block and the coupling groove of the second core block. 
 
     
     
       19. A compressor comprising:
 a bobbin on which a coil is wound; 
 a magnet frame at least partially surrounded by the coil and configured to mount a magnet; 
 an inner core at least partially surrounded by the magnet frame; and 
 an outer core comprising first and second core blocks circumferentially coupled, at least a portion of the outer core being arranged at least partially around the bobbin, 
 wherein the first core block and the second core block each comprise sheets circumferentially stacked, and 
 wherein the sheets each comprise:
 a first sheet portion providing an outer part of the first and second core blocks; 
 a second sheet portion connected to the first sheet portion; and 
 a third sheet portion connected to the second sheet portion and providing an inner part of the first and second core blocks. 
 
 
     
     
       20. The compressor of  claim 19 , wherein the outer core further comprises:
 a third core block axially coupled to the first core block; and 
 a fourth core block axially coupled to the second core block.